Biographical Data :

Nawab Sirajuddaula was the nephew and son-in-law of Aliwardi Khan, Governor of Bengal. He succeeded to the throne in 1756.

Clive defeated him in the battle of Plassey, aided by the treachery of Mir Jaffar. He attacked Calcutta in 1756 and had 146 Europeans prisoners in what is alleged by the British as Black Hole of Calcutta.

At the age of 20 Miran, son of Mir Jaffar, assassinated him. He reigned for 15 months.